JPH0645770Y2 - Home Gotatsu structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a structure for a home kotatsu.

[Prior art and its problems] In the conventional home turtle, since the separately manufactured legs and the upper frame are connected and assembled to each other before use, the structure of the connecting part is complicated. There was a drawback that
In addition, the height of the upper frame portion cannot be adjusted, and the storage is inconvenient.

In addition, conventionally, a home kotatsu structure that rotates around a horizontal pin and folds is known as in Utility Model Registration No. 357,891, but this is made of wood, and when used as it is as plastic , The external force was concentrated on the base of the leg and the pin, and the strength was insufficient.

An object of the present invention is to provide a structure for a home kotatsu that solves the above problems.

[Means for solving problems]

According to the present invention, the leg root portion, which is inclined at an angle of about 45 degrees with respect to the vertical line and has the inwardly inclined surface as the lower end surface, is molded of plastic integrally with the upper surface frame portion, and further in the longitudinal direction. On the other hand, the legs that have an inclined surface that inclines at about 45 degrees as the upper end surface are joined so that both inclined surfaces correspond to each other and are rotatably connected by a connecting oblique shaft, and the leg shape is vertical. Locking means composed of a locking ridge and a locking groove for holding each of the upright state and the horizontal folded state are provided on both the inclined surfaces.

[Action]

Since the weight is supported by the mutual contact of both inclined surfaces, which can have a relatively large area, the strength of the folding part
Greater rigidity.

Further, by simply rotating the legs about 180 degrees around the connecting oblique axis, the folding and vertical standing states can be switched.

And the load concentrates on the root of the leg at the time of use, but since it has an integral structure with the upper frame part, a reinforcing connecting piece is attached,
Rigidity and strength can be increased without making other complicated structures.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 is an upper frame, and the upper frame 1 is an upper frame 2
And the leg root portions 3 provided at the four corner portions 15 of the upper surface frame portion 2 are integrally molded of plastic. The upper surface frame portion 2 has a substantially lattice-like structure in plan view, and specifically includes a rectangular outer peripheral frame portion 5 and vertical and horizontal crosspieces 6 ... Inside the frame portion 5. 7 are leg portions that support the upper frame 1, and are attached to the leg root portions 3 so as to be foldable. Reference numeral 4 denotes a protection halftone portion, which is provided at the center position of the outer peripheral frame portion 5. Although not shown, a decorative top plate or the like is placed on the upper surface of the upper frame portion 2, and an electric heater is arranged on the upper side of the protective mesh portion 4 and surrounded by the vertical and horizontal crosspieces 6 ... Set up.

As shown in FIGS. 2 and 3, the leg portions 7 are rotatably coupled to the leg root portions 3 by a connecting oblique shaft 10. In the use state, that is, when the legs 7 ...
The leg portion 7 and the leg base portion 3 are in contact with each other through inclined surfaces 8 and 9 of about 45 degrees formed on the lower portion of the leg portion and the upper portion of the leg portion 7. The connecting oblique shaft 10 includes a pivot pin 12 having fixed collar portions 11 and 11 at both ends, and a sliding ring 13 fitted on the pivot pin 12.
And a resilient member 14 such as a coil spring which is interposed between one fixed collar portion 11 and the sliding ring 13 and constantly resiliently presses the sliding ring 13. In the illustrated example, the leg bases 3 ... Are formed in an upward opening rectangular tube shape, and correspondingly, the leg portions 7 are also formed in the same rectangular tube shape. 23 ... is the hollow part. The pivot support pin 12 of the connecting oblique shaft 10 penetrates through the insertion holes 19 and 19 provided substantially at the center positions of the inclined surfaces 8 and 9, and the leg root portion 3 and the leg portion 7 are elastic members 14. Due to the elastic urging force of the above, they are held in contact with each other in a direction in which they approach each other via both inclined surfaces 8 and 9.

16 is a locking means, which is the leg portion 7 when in use and not in use.
It is provided to prevent the rotation of the. The locking means 16 is composed of a locking ridge 17 and a locking groove 18 that is engaged with and disengaged from the ridge 17.

To fold the legs 7 ... As shown in FIG.
When the leg portion 7 is rotated about the connecting oblique shaft 10 in the direction of the arrow B in a substantially horizontal state while being pulled in the direction, the hand is released to lock the locking means 16, that is, the locking projection 17. Locking groove
18 may be engaged with each other. On the contrary, in order to make the legs 7 ... Stand upright (in use), the operations are performed in the reverse order.

As shown in FIG. 5, the protection net portion 4 is specifically provided on the lower side of the electric heater housing frame 20 formed by the vertical and horizontal crosspieces 6 ... In a grid or net shape, and the crosspiece 6 ... It is integrally molded with. Reference numeral 21 denotes a knob substrate panel of an electric heater (not shown) mounted in the storage frame 20, which is integrally molded on one side of the crosspiece 6 together with a predetermined scale display portion. Reference numeral 22 indicated by a virtual line is an operation knob.

In FIGS. 1 and 2, a load W acts on the leg root portions 3 through the upper surface frame portion 2 during use, and simultaneously receives a bending moment M. Since there is no connecting part whose cross-sectional shape changes suddenly between the upper surface frame part 2 and the corner part 15 ... to the inclined surface 8 at the lower end, a uniform cross-sectional shape is formed, so rather than acting on the leg parts 7. It can withstand a large bending moment M sufficiently.

With regard to the plastic material of the upper frame 1, it is preferable to employ polybutylene terephthalate having heat resistance, especially when the protective net portion 4 is integrally molded.

There are various types of electric heaters for home kotatsu, so the shape of the central part of the upper frame 1 is not constant, but as shown in FIGS. 6, 7, and 8, the upper frame mold 47 is used. The outer peripheral mold 48 and the central mold 49 can be separately assembled and assembled, and the large outer peripheral mold 48 is commonly used to selectively combine the central mold 49 ... It is desirable to use. By doing so, it is possible to cope with a change in the shape of the central portion of the upper frame due to the model of the electric heater and other design considerations.

In the above embodiment, the leg portions 7 and the leg root portions 3 are provided in the corner portions 15 of the upper surface frame portion 2, but they may be provided in positions other than the corner portions 15. It doesn't matter.

Regarding the upper surface frame portion 2, the case of the lattice structure is shown,
This may be another geometric pattern composed of a combination of triangles or the like. The planar shape of the upper frame 1 may be a shape other than a rectangle.

In the illustrated embodiment, since the upper frame 1 including the protection net portion 4 is integrally formed of plastic, compared with the case where the protection net portion 4 is separately manufactured from another material such as metal, Easy to assemble and reduce cost,
The temperature rise of the protection net portion 4 is alleviated, and no burn is caused even if it touches the body. In a normal use state in which the top plate is placed on the upper portion of the upper frame 1, the sliding mechanism for folding the leg portions 7 ... Can not be seen at all from the outside, so it can be said that the appearance is excellent. Also, the legs 7 can be bent to make the whole flat, which is compact and convenient for storage. It is extremely simple as a folding mechanism for the legs 7.

[Effect of device]

According to the present invention, as described above, the leg root portion 3 which is inclined at an angle of about 45 degrees with respect to the vertical line and has the inwardly inclined surface 8 as the lower end surface is made of plastic integrally with the upper surface frame portion 2. Further, the leg portion 7 which is molded and further has the inclined surface 9 which is inclined at about 45 degrees with respect to the longitudinal direction as the upper end surface is connected so that the inclined surfaces 8 and 9 correspond to each other and are rotatable. The locking ridges 17 and the locking grooves 18 for connecting the shafts 10 and holding the legs 7 in the vertical standing state and the horizontal folded state, respectively.
Since the locking means 16 composed of and is provided on the both inclined surfaces 8 and 9, it is supported by contacting the inclined surfaces 8 and 9 having a relatively large area in the vertical use state, Stable (small surface pressure) and withstands weight and external force on the top plate side. Even in the folded state (as shown in FIG. 4), the horizontal folded state is maintained by the contact between the inclined surfaces 8 and 9 having a relatively large area, and the leg portion 7 Since one side touches a tatami mat or the like, it can be stably placed on the tatami mat or the like, or stacked in multiple stages.
Weight and external force from the top plate do not act directly on the connecting oblique shaft 10, damage to the connecting oblique shaft 10 can be prevented, and the connecting oblique shaft 10 has a long life.
A bending moment that tends to incline the leg portion 7 acts and various external forces concentrate on the root portion 3, but since it is integrally molded with the upper frame portion 2 with plastic, both rigidity and strength are large, and it is durable. Excellent in performance.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a home rattling structure showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of an essential part of the home rattling structure according to the present invention, and FIG. 3 is a leg portion. 4 is an enlarged perspective view showing the upper part of FIG. 4, FIG. 4 is an overall side view showing the folded state, FIG. 5 is an enlarged perspective view with a partial cross-section showing the protective mesh portion, and FIGS. FIG. 2 ... Top frame part, 3 ... Leg base part, 7 ... Leg part, 8, 9 ...
… Inclined surface, 10 …… Connected oblique axis.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Reference: Japanese Patent Publication No. 44-15274 (JP, Y1) Japanese Patent Application No. 56-152074 (Japanese Utility Model No. 58-55232) A microfilm (JP, U) of which the contents were photographed. A microfilm (JP, U) of the contents and drawings attached to the application of Japanese Patent Application No. 54-138786 (No. 56-58232 of Japanese Utility Model Publication) was taken. A microfilm (JP, U) of the contents and drawings attached to the application for Japanese Patent Application No. 60-158031 (No. Sho 62-67113)

Claims (1)

[Scope of utility model registration request] 1. A leg root portion 3 having as a lower end surface an inclined surface 8 which is inclined at an angle of about 45 degrees with respect to a vertical line and which faces inward.
Is molded integrally with the upper surface frame portion 2 by plastic, and further, the leg portion 7 having the inclined surface 9 inclined at about 45 degrees with respect to the longitudinal direction as the upper end surface, the inclined surfaces 8 and 9 mutually Correspondingly and rotatably connected with a connecting diagonal shaft 10,
Moreover, the locking means 16 composed of the locking projection 17 and the locking groove 18 for holding the leg portion 7 in the vertical standing state and the horizontal folding state is provided on the both inclined surfaces 8 and 9. A structure for a home kotatsu characterized by being provided.